(x-2)(x-8)=4x+6
x²+8x-2x+16=4x+6
x²+8x-4x-2x= 6-16
x²+2x=-10
x²+2x-10=0
3x+7-(9+3x)=10x-16
3x+7-9-3x=10x-16
3x+7-9-3x-10x-16=0
3x cu -3 x se reduc
-10x= -7+9+16
-10x=18
x=18/10
x=1.8
-2(4x-15)=-3x
-8x+30=-3x
-8x+3x=-30
-5x=-30 inmultim cu -1
x=30/5
x=6
